Welcome to D&A Building Services, a family of facility maintenance companies. As premier providers of commercial and industrial building services, these veteran-owned companies are comprised of D & A Building Services, Inc. and D & A Window Cleaning Services, Inc. The companies serve public and private sector clients using their own staff, not subcontractors. Established in 1985, D&A employs highly trained individuals operating from offices in Central Florida, South Florida, West Florida, North Florida Detroit, Michigan, Kansas City, Missouri and Columbus, Ohio.